Electric controller.



No. 699,95l. Patented May 13, 1902.

J. C. HENRY, Decd. v

, S. A. HENRY, Executrix. ELEcTmf; coN-TBoLLEn. (Application filed Apr.`1, 1901.) 'me Model.) 2 sweety-sheet l.

Patented. May I3, 1902.

No. s99,95|

J. C'. HENRY, Decd.

S. A. HENRY, Executrix. ELECTRIC CONTROLLER.

(Application led Apr. 1, 1901.)

2 sheets-sheet 2.

(No Model.)

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WITNESSES Nonms virtus ca Puma-umn TINTTTD STATES .PATENT Ormea.

JOI-IN C. HENRY, OE DENVER, COLORADO; SUSIE A. HENRY, EXECUTRIX OF SAID JOI-IN C. HENRY, DECEASED, ASSIGNOR TO STANLEY ELECTRIC MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

ELECTRIC CONTROLLER.`

SPECIFICATION forming part of Letters Patent No. 699,951, dated May 13, 1902.

I Application filed April 1,1901. Serial Ilo. 54,000. (No model.)

To @ZZ whom it may concern: use in the motors for regenerative form of Be it known that I, JOHN C. HENRY, a citiseries-parallel controllers is much coarser Zen of theUnited States, residing at Denver, than is ordinarily used in shunt-motors. county of Arapahoe, VState of Colorado, have Then constructing them to work on a ive- 55 5 invented certain new and useful Improvehundred-volt circuit, I wind the armature as `ments in Electric Controllers, of which the folfor a ve-hundred-volt motel', ybut the fields lowing is a specification. as for two hundred and fifty volts only.

This invention relates to improvements in In the starting position, Diagram 1, motor controllers for electric vehicles and machinery No. 1 has its eld divided, one section being 6o 1o requiring a great range ofduty, such as cars, in shunt with the armature, the other being automobiles, elevators and printing-presses, in series therewith. It will be noticed that and such. It is of the class known as series the connections are similar to those of an ormultiple, and may be further classified as a dinary compound machine; but in this case regenerative controllert'. e., one that drives the resistance of the series coil is unusually 65 I5 the carat various speeds by current from the high. It, however, prevents the motor from line and recoups the energy of momentum or taking more than a small amount of current, gravity back to the line when descending at the same time magnetizes the'ields ingrades or stopping the car. tensely, so as to insure-strong starting torque This application is an improvement on nuat a Very slow speed. In the next position, as 7o zo 'merous other pending'and issued patents in shown in Diagram 2, it will be seen that the my name. motor has been changed to a long-shunt com- The main feature of the invention is the pound machine,'which allows the shunt-coils provision of means to enable. a car to start and the motor as a whole to. take more curvery slowly and have its speed gradually inrent. The third step forward vchanges motor 75 z5 creased without throttling the current by No. l from a compound machine with long Y dead resistance. shunt to an ordinary shuntemotor, which still Figures l to 19 represent diagram matically further increases its capacity to receive'cur-l the course of the current through the various rent andto perform work. This leaves a pair motor parts in successive positions ofthe con- `of shunt-motors connected in series, as shown 8o 3o troller. Fig. 2O represents a development of in Diagram Ll. A further increase of speed in the controller. Fig. 2l represents the form series position may then be obtained'by inof field I prefer to use in connection thereserting resistances in the field-circuit, Fig. 5. with. In order to change the motors from series to Itwill be understood in using the form of parallel, I first disconnect one motor com- 85 35 field-magnets shown in Fig. 21 that one of the pletely from the-circuit, which is done in the pair of coils may be cutout without disturbfollowing manner: One pair of field-coils is ing the polarity of the magnets, as .thepoledisconnected and reversed, so as to demagnetpiece corresponding to the cnt-out coil reize the fields. The motor is consequently demains a magnet of the same polarity of a prived of its electromotive force or voltage, 9o 4o consequent pole type. The various changes which permits the armature to be removed are made with the iirst motor, which will be rewith but a triin'g flash, as no pressure of. ferred to as motor No. l. It will be noticed voltage remains to project the current. Thus that no changes are made with motor No. 2 in Fig.- 7 the current passes unbroken through which would eifect the style of machinethe reverse fields in parallel, and after cutting 9 5 45 that is, it may be regarded as a shunt-maf out the armature, Fig. 79 these fields are chine through all of the various combinations. short-circuited, Fig. 8, and then Withdrawn, The regulation is mainly accomplished by vaas shown in Diagram 9, leaving but one morious changes being made in the arrangement tor in circuit working under intense fields. of field-coils of motor No. l, while frequent This arrangement is followed by connecting roo 5o use is made of shunt combinations. It should the iirst motor to the circuit in parallel withy be understood that the gage of wire thatI its mate. Thisis accomplished graduallyand substantially in the same manner as it is first varied on starting the motors-tl e., it is connected as an ordinary compound motor, as a compound with long shunt, and as an ordinary shuntmachine, Figs. 10, 11, 12, and 13. After the motors are connected in parallel, it being desired to further speed them up, I decrease the strength of the fields by firstinsertingresistances, Fig. 14, then changing the field-coils from parallel to series, Figs. 15 and 1G, and still further by inserting Variable resistance in the circuit, Figs. 17, 18, and 19.

The course of current through the various motor parts, as shown in the diagrams, may be traced by connecting the terminals of the motor parts lettered A to U with the contacts numbered 1 to 40 in the development on the corresponding dotted lines. For instance, Diagram 1 showsa pair of motors connected in series, No. 1 being assembled in the ordinary compound way, while No. 2 is connected as a sliuiit-machine. The current enters from trolley to finger A to contacts 1 and 2, thence by finger B through armature 1, byfinger D, contacts 5 and 7 to finger E, through fieldcol F 1 h to finger I, contact 21, also from finger B through field F 1 a to finger H, contact 17 and 7 to the entering side ot' field F 1 l; at finger E. From contact 2l current passes through contacts 22 23 29 to AO, thence by finger Q to armature 2 to the ground, also from the entering side of armature 2 at Q, by contacts 40 and 41, finger R, through field F 2 c., thence by finger O, contacts 237 and 3f), finger P, through field F 2 l) to the ground. Diagram 9 shows but one inotor--that is, No. 2-- in the circuit. rThe current enters by trolley, finger A, contacts 1, 2, 3, and 4, finger C, thence through armature 2 to the ground, also by finger Q, contacts O and l2, finger R, field F 2 a, finger O, contacts 37 and 3f), through field F 2 b to the ground. Diagram 13 shows the armatures connected in parallel with the fields, also connected in parallel. Current cn-,

ters by finger A, contacts 1 and 3, to finger B, through armature 1, finger G, through contacts 16, 25, and 49 to the ground, also through contacte, finger C, to finger Q, thence through armature 2 to the `ground, also from contact il, finger 13, field F 1 o., contacts 20and11, finger E, through field F 1 I), contacts 2G, 25, and 40 to the ground, also by contact 4, fingers C and Q, contacts 10 and 42, finger R, through field F 1 a, contacts 38 and 3f), field F 2 Y) to the ground.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. The method of regulating an electric motor which consists in connecting the fieldcoils so that on starting the motor may be connected as a compound machine, having onesection ot its high-resistance field in series with its armature and the other section in snunt therewith, changing said shunt-scction to long shunt, so that it embraces the series section and then connecting both of said field-coils in shunt with the armature.

2. The method of regulating an electric motor, which consists in connecting the fieldcoils so that on starting the motor may be connected asa compound machine, having one section of its high-resistance field in series with its 'armature and the other section in shunt therewith, changing said shunt-section to long shunt so that it embraces the series section, and then connecting both of said field-coils in shunt and further regulating by varying the current in said fields.

8. The method of regulatinga pair of electric motors Which consists in starting one of them as a compound machine, using a section of the ordinary shunt-coil as a series coil, changing the shunt connection to long shuiitand then to regulate shunt combination cutting one of the said motors from the circuit by first reversing a part of its field-coils, and then connectingit in parallel in the same manner as it was previously started.

A. The method of changing motors from series to parallel, consisting in reversing a part of the field-coils of one of the motors so as to neutralize its magnetism, opening the arm atu re-circuit, allowing the current to pass through the helds in series With the other motor, then short-cireuiting and removing the fields ot' the first-named motor from the circuit and connecting the motors in parallel.

5. The method ot' operating a pair of electric motors, which consists in connectingthe armatures in series relation, and the fields in shunt relation thereto, changing the conibined machine to parallel, and then speeding up by increasing the resistance of the field-circuit by changing the :field-coils from parallel to series relation, and by inserting resistance.

G. rlhe method otoperating a pair of electric motors, which consists in connecting the armatures in series relation and the fields in shunt relation thereto, changing the conibined machine to parallel and then speeding up by placing the fields ot both motors in series.

7. The methodol. operating a pair of electric motors which consists in connecting the armatures in series relation and the fieldcoils partly in series and partly in shunt rclation, and then changing the field-coils wholly to series relation.

S. The method of operating electric motors which consists in reversely connecting a part ofv the coils ot' a motor to neutralize the field thereof, and then opening the armature-circuit.

In testimony whereof' I have hereunto set my hand and seal, this (3th day of March, A. l). 1201, in the presence of two witnesses.

JNO. C. HENRY. lin. s] Witnesses:

CABLE WiiiTEi-inan, D. CARL HENRY.

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